LM3500TL-16EV National Semiconductor, LM3500TL-16EV Datasheet
LM3500TL-16EV
Manufacturer Part Number
LM3500TL-16EV
Description
BOARD EVALUATION LM3500TL-16
Manufacturer
National Semiconductor
Series
PowerWise®r
Specifications of LM3500TL-16EV
Current - Output / Channel
20mA
Outputs And Type
1, Non-Isolated
Voltage - Output
14V
Features
Shutdown
Voltage - Input
2.7 ~ 5.5 V
Utilized Ic / Part
LM3500
Core Chip
LM3500
Topology
Buck
No. Of Outputs
1
Output Voltage
16V
Input Voltage
2.7V To 7V
Kit Contents
Board
Development Tool Type
Hardware - Eval/Demo Board
Lead Free Status / RoHS Status
Not applicable / Not applicable
© 2004 National Semiconductor Corporation
LM3500 Evaluation Board
Introduction
The LM3500 is a synchronous step-up DC/DC converter
designed for white LED applications. The evaluation board is
set up to drive 3 standard V
battery. A fourth LED pad (D4) is included for testing of up to
4 low V
Schematic
Bill of Materials
Designator
U1
L
C
C
D1–D3
D4
R1
F
IN
OUT
white LEDs.
F
white LEDs from a single Li-Ion
LM3500TL-ADJ, µSMD 8-lead
22 µH, DT1608C-223
1 µF, 25V Ceramic C3216X7R1E105K
1 µF, 25V Ceramic C3216X7R1E105K
White LED, LWT67C
0Ω Resistor, 1206 Case, CRCW1206–000J
24Ω, 1206 Case, CRCW1206–240J
AN200928
Component
National Semiconductor
Application Note 1309
Clinton Jensen
December 2003
The LED current is set using the resistor R2 and the equa-
tion I
approximately 20 mA LED current. Please note that for
correct operation the SHDN pin must have a voltage greater
than 1.1V applied to it.
LED
= 0.5V/R2. The evaluation board comes set up for
National Semiconductor
Coilcraft
TDK
TDK
Osram
Vishay
Vishay
Manufacturer
20092801
www.national.com
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LM3500TL-16EV Summary of contents
Page 1
... V white LEDs from a single Li-Ion F battery. A fourth LED pad (D4) is included for testing low V white LEDs. F Schematic Bill of Materials Designator U1 LM3500TL-ADJ, µSMD 8-lead L 22 µH, DT1608C-223 C 1 µF, 25V Ceramic C3216X7R1E105K µF, 25V Ceramic C3216X7R1E105K OUT D1–D3 White LED, LWT67C D4 0Ω ...
Page 2
... BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...